The work covers exhaust and A/C system repairs on a 2026 Blue Bird conventional Type C school bus (66 children), using the listed BOM parts, with manufacturer/standard warranties and repairs performed to industry, EPA, and OSHA standards. Vendors must have a repair facility within 100 miles of the agency operating the vehicle in Tucson, AZ 85756, and must meet insurance, licensing, SDS/on-site documentation, and local Department of Labor wage requirements. Quotes must be submitted by email or fax and itemized with individual and total parts prices, labor time, applicable paint labor, all fees including shipping/freight, and estimated days to delivery after purchase order receipt. Offerors must be actively registered in SAM under the appropriate business category/NAICS code before award and through final payment, and must provide representations and certifications unless available via SAM. Quotes must remain valid for at least 30 calendar days after submission.